| 摘要 |
PURPOSE: To enable reversible and iterative writing and erasing and holding thereof by manufacturing an optical modulation cell by using a specific electrolytic material and executing writing and erasing by impressing voltage on the electrodes of this cell. CONSTITUTION: The basic optical modulation cell 1 is manufactured by arranging the layer 3 of the electrolytic material (A) having several to several tensμm thickness between the working electrode 2 and the counter electrode 4 in contact therewith. Next, the cells 1 are combined and the voltage negative with respect to the voltage of the electrodes 4 is impressed on the electrodes 2 to increase the optical density of the boundary region between the electrodes 2 and the layers 3, by which the pixels 5 are written. The pixels 5 are erased by passing the current of the direction reverse therefrom. The material A is formed of a solid compsn. consisting essentially of >=1 kinds of water-soluble salts (e.g.: zinc bromide) of material precipitatable from an aq. soln. to cathode, >=1 kinds of water-soluble film formable polymers (e.g.: hydroxyethyl cellullose) and water.
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